> ## Documentation Index > Fetch the complete documentation index at: https://novita.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # API Reference Overview ## Welcome to Novita AI API Reference This documentation provides comprehensive reference for all Novita AI APIs. Our APIs are organized into several categories: ## Base URLs All API requests should be made to: ``` https://api.novita.ai ``` **OpenAI-Compatible Endpoints:** ``` https://api.novita.ai/openai ``` ## API Groups ### Basic APIs Fundamental APIs for authentication, billing, and account management. | Endpoint | Description | | --------------------------------------------------------------------------- | ----------------------------- | | [Authentication](/api-reference/basic-authentication) | API key authentication | | [Error Codes](/api-reference/basic-error-code) | Unified error response format | | [Get User Balance](/api-reference/basic-get-user-balance) | Query account balance | | [Query Monthly Bill](/api-reference/basic-query-monthly-bill) | Query monthly billing | | [Query Usage-Based Billing](/api-reference/basic-query-usage-based-billing) | Query usage-based billing | | [Query Fixed-Term Billing](/api-reference/basic-query-fixed-term-billing) | Query fixed-term billing | ### Model APIs #### LLM APIs Large Language Model APIs with OpenAI compatibility. | Endpoint | Description | | ------------------------------------------------------------------------------ | ------------------------ | | [Create Chat Completion](/api-reference/model-apis-llm-create-chat-completion) | Create a chat completion | | [Create Completion](/api-reference/model-apis-llm-create-completion) | Create a completion | | [Create Embeddings](/api-reference/model-apis-llm-create-embeddings) | Create embeddings | | [Create Rerank](/api-reference/model-apis-llm-create-rerank) | Rerank search results | | [List Models](/api-reference/model-apis-llm-list-models) | List available models | | [Retrieve Model](/api-reference/model-apis-llm-retrieve-model) | Get model details | **Batch Operations:** | Endpoint | Description | | -------------------------------------------------------------------------------- | --------------------- | | [Create Batch](/api-reference/model-apis-llm-create-batch) | Create a batch job | | [Retrieve Batch](/api-reference/model-apis-llm-retrieve-batch) | Get batch job status | | [Cancel Batch](/api-reference/model-apis-llm-cancel-batch) | Cancel a batch job | | [List Batches](/api-reference/model-apis-llm-list-batches) | List all batch jobs | | [Upload Batch Input File](/api-reference/model-apis-llm-upload-batch-input-file) | Upload file for batch | | [List Files](/api-reference/model-apis-llm-list-files) | List uploaded files | | [Query File](/api-reference/model-apis-llm-query-file) | Get file metadata | | [Delete File](/api-reference/model-apis-llm-delete-file) | Delete a file | | [Retrieve File Content](/api-reference/model-apis-llm-retrieve-file-content) | Get file content | #### Image, Audio and Video APIs Multimodal AI APIs for content generation and editing. **Core Endpoints:** | Endpoint | Description | | ---------------------------------------------------- | ---------------------- | | [Webhook](/api-reference/model-apis-webhook) | Webhook configuration | | [Get Model](/api-reference/model-apis-get-model) | Query available models | | [Task Result](/api-reference/model-apis-task-result) | Get async task results | **Image Generation:** | Endpoint | Description | | ---------------------------------------------------------- | ------------------------- | | [Text to Image](/api-reference/model-apis-txt2img) | Generate images from text | | [Image to Image](/api-reference/model-apis-img2img) | Transform existing images | | [Reimagine](/api-reference/model-apis-reimagine) | Reimagine compositions | | [FLUX.1 Schnell](/api-reference/model-apis-flux-1-schnell) | Fast image generation | | [Seedream 3.0](/api-reference/model-apis-seedream-3-0-t2i) | High-quality generation | | [Seedream 4.0](/api-reference/model-apis-seedream-4-0) | Advanced generation | | [Qwen Image](/api-reference/model-apis-qwen-image-txt2img) | Qwen image generation | **Image Editing:** | Endpoint | Description | | ------------------------------------------------------------------ | ---------------------- | | [Upscale](/api-reference/model-apis-upscale) | Image upscaling | | [Remove Background](/api-reference/model-apis-remove-background) | Background removal | | [Replace Background](/api-reference/model-apis-replace-background) | Background replacement | | [Inpainting](/api-reference/model-apis-inpainting) | Image inpainting | | [Image to Prompt](/api-reference/model-apis-image-to-prompt) | Reverse engineering | **Video Generation:** | Endpoint | Description | | -------------------------------------------------------------------- | ------------------------- | | [Text to Video](/api-reference/model-apis-txt2video) | Generate videos from text | | [Image to Video](/api-reference/model-apis-img2video) | Animate images | | [Hunyuan Video Fast](/api-reference/model-apis-hunyuan-video-fast) | Fast video generation | | [Wan 2.5 T2V Preview](/api-reference/model-apis-wan-2.5-t2v-preview) | Wan 2.5 preview | | [Kling V2.1 Master](/api-reference/model-apis-kling-v2.1-t2v-master) | Kling V2.1 master | | [Minimax Hailuo 02](/api-reference/model-apis-minimax-hailuo-02) | Minimax Hailuo | | [Vidu Q1](/api-reference/model-apis-vidu-q1-text2video) | Vidu Q1 generation | **Audio:** | Endpoint | Description | | --------------------------------------------------------------------- | ---------------------- | | [Minimax Speech 02](/api-reference/model-apis-minimax-speech-02-hd) | Minimax TTS HD | | [Minimax Speech 2.8](/api-reference/model-apis-minimax-speech-2.8-hd) | Minimax 2.8 HD | | [GLM TTS](/api-reference/model-apis-glm-tts) | GLM text-to-speech | | [GLM ASR](/api-reference/model-apis-glm-asr) | GLM speech recognition | ### GPU APIs GPU instance management and serverless GPU endpoints. #### GPU Instance | Endpoint | Description | | -------------------------------------------------------------- | -------------------- | | [Create Instance](/api-reference/gpu-instance-create-instance) | Create GPU instance | | [List Instances](/api-reference/gpu-instance-list-instances) | List all instances | | [Get Instance](/api-reference/gpu-instance-get-instance) | Get instance details | | [Start Instance](/api-reference/gpu-instance-start-instance) | Start instance | | [Stop Instance](/api-reference/gpu-instance-stop-instance) | Stop instance | | [Delete Instance](/api-reference/gpu-instance-delete-instance) | Delete instance | **Template Management:** | Endpoint | Description | | -------------------------------------------------------------- | -------------------- | | [Create Template](/api-reference/gpu-instance-create-template) | Create template | | [List Templates](/api-reference/gpu-instance-list-templates) | List templates | | [Get Template](/api-reference/gpu-instance-get-template) | Get template details | **Product & Pricing:** | Endpoint | Description | | ---------------------------------------------------------- | ----------------- | | [List Products](/api-reference/gpu-instance-list-products) | List GPU products | #### Serverless GPUs | Endpoint | Description | | ------------------------------------------------------------ | -------------------- | | [Create Endpoint](/api-reference/serverless-create-endpoint) | Create endpoint | | [List Endpoint](/api-reference/serverless-list-endpoint) | List endpoints | | [Get Endpoint](/api-reference/serverless-get-endpoint) | Get endpoint details | | [Update Endpoint](/api-reference/serverless-update-endpoint) | Update endpoint | | [Delete Endpoint](/api-reference/serverless-delete-endpoint) | Delete endpoint | ## Quick Start ### 1. Get Your API Key Visit the [settings page](https://novita.ai/settings/key-management) to create and manage your API keys. ### 2. Make Your First Request ```bash theme={"system"} curl --location 'https://api.novita.ai/v1/models' \ --header 'Authorization: Bearer {{API Key}}' ``` ### 3. Explore SDKs We provide official SDKs for popular languages: * [Python SDK](/guides/model-apis-sdks#python) * [JavaScript/TypeScript SDK](/guides/model-apis-sdks#javascripttypescript) ## Authentication All API requests require authentication using Bearer tokens. Include your API key in the Authorization header: ``` Authorization: Bearer {{API Key}} ``` See [Authentication](/api-reference/basic-authentication) for details. ## Error Handling Novita AI uses standard HTTP status codes and returns errors in a unified format. See [Error Codes](/api-reference/basic-error-code) for complete error reference. ## Common Use Cases | User Query | Go To | | ---------------------------- | ----------------------------------------------------------------------------------- | | "How to get started?" | [Quick Start](#quick-start) + [Authentication](/api-reference/basic-authentication) | | "API not working, error 401" | [Error Codes](/api-reference/basic-error-code) | | "Generate images from text" | [Text to Image](/api-reference/model-apis-txt2img) | | "Create chatbot with LLM" | [Chat Completion](/api-reference/model-apis-llm-create-chat-completion) | | "Generate videos" | [Text to Video](/api-reference/model-apis-txt2video) | | "Deploy GPU instance" | [Create Instance](/api-reference/gpu-instance-create-instance) | | "Check my balance" | [Get User Balance](/api-reference/basic-get-user-balance) | | "OpenAI compatible API" | [LLM API Guide](/guides/llm-api) | ## Need Help? * [Discord Community](https://discord.gg/YyPFAzwp7P) * [Email Support](mailto:support@novita.ai) * [Console](https://novita.ai/console)